Quote:
Originally Posted by -George-
Hi
I was wondering about fuel consumption and other factors after looking at different engine ci - power possibilities.
Eg:
2 identical cars, both at 650hp.
Car 1: 428ci (stroked 351 small block) = 1.5 hp per ci.
Car 2: 360ci ---------------------------- = 1.8 hp per ci.
Which of the 2 will be a more efficient engine in terms of street cruising and which would be more efficient under wide open throttle (racing)?
Which would have better acceleration (flatter torque curve)?
|
George,
The 428 would clearly be better at that 650 hp level for street cruising and longevity vs the 360. As others have mentioned, the 360 would also need tons of rpm at the sacrifice of low and mid range power to hit that number.
The acceleration and flatter torque curve questions cannot be answered with the lack of info provided.
Quote:
Originally Posted by ratman67
my 540 bbc makes 1.5 hp per c.i. single four barrel, big hyd roller, 10.7 comp, trick full cnc heads.... i think the motor made 100 more hp from the full cnc port job...
|
Yep, 1.5 hp/cube can be easily done these days with good parts and stuff that is not too radical or on the edge.